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Ammonia removal method of distilled ammonia wastewater

A technology for distilling ammonia wastewater and deammonization, which is applied to chemical instruments and methods, water pollutants, water/sewage treatment, etc. It can solve the problems of undisclosed deammonization, detarring, high equipment requirements, ozone leakage, etc., and achieve regeneration The effect of simple and reliable operation, low equipment investment and short process

Pending Publication Date: 2019-03-22
湖北申昙环保新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method does not mention the degreasing effect of activated carbon and the effect of degreasing, and the combination of activated carbon and ozone consumes a lot of power, requires high equipment, and is prone to ozone leakage, causing secondary pollution
[0007] In the above-mentioned documents, there is no report on the use of molecular sieves to adsorb ammonia and detar in ammonia distillation wastewater.

Method used

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  • Ammonia removal method of distilled ammonia wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The specific implementation is as figure 1 As shown in the device process, the ammonia distillation wastewater with a tar concentration of 181mg / L, a volatile ammonia content of 3g / L (ammonium bicarbonate, free ammonia), and a COD (chemical oxygen demand) of 2000 mg / L is fed into the The adsorption tower of the adsorbent, wherein the adsorbent is a molecular sieve adsorbent, and the adsorbent is a hydrophobic ZSM-5 molecular sieve; the waste water after adsorption is sent to the storage tank; part of the waste water in the storage tank is reused as cooling water, and a part emission. The tar content in the treated wastewater was 2.2 mg / L, the ammonia nitrogen content was 80 mg / L, and the COD content was 500 mg / L.

Embodiment 2

[0037] The specific implementation is as figure 1 In the device process shown, the ammonia distillation wastewater containing tar concentration of 200mg / L is sent to the adsorption tower filled with adsorbent, wherein the adsorbent is molecular sieve adsorbent, and the adsorbent adopts TS-1 molecular sieve; Ammonia wastewater is sent to the storage tank; part of the wastewater in the storage tank is reused as cooling water, and part of it is discharged. The ammonia distillation wastewater before treatment contains a tar concentration of 200mg / L, a volatile ammonia content of 3g / L, and a COD of 3000 mg / L. In the treated ammonia distillation wastewater, the tar content is 3 mg / L, and the ammonia nitrogen content is 60mg / L. L, COD content is 200 mg / L.

Embodiment 3

[0039] The specific implementation is as figure 1 As shown in the device process, the ammonia distillation wastewater containing tar concentration of 220mg / L is sent to the adsorption tower filled with adsorbent, wherein the adsorbent is a molecular sieve adsorbent, and the adsorbent adopts Ti-MOR molecular sieve; the ammonia distillation after adsorption The waste water is sent to the storage tank; part of the waste water in the storage tank is reused as cooling water, and part of it is discharged.

[0040] The ammonia distillation wastewater before treatment contains a tar concentration of 100mg / L, a volatile ammonia content of 4g / L, and a COD of 1000 mg / L. In the treated ammonia distillation wastewater, the tar content is 1 mg / L, and the ammonia nitrogen content is 50mg / L. L, COD content is 100 mg / L.

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Abstract

The invention relates to an ammonia removal method of distilled ammonia wastewater. The invention mainly aims at solving the technical problems that high ammonia nitrogen and tar in the distilled ammonia wastewater affect the subsequent ammonia distillation efficiency and operation discharge of biochemical devices. For solving the technical problems, the invention adopts the following technical scheme: high ammonia nitrogen distilled ammonia wastewater is fed into an adsorption tower filled with an adsorbent, wherein the adsorbent is a molecular sieve adsorbent; purified water is fed into a reservoir and one part of the purified water is used as cooling water for recycling. The treating method can be used for the industrial production flow of distilled ammonia wastewater treatment.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, in particular to a method for deammonization of ammonia distillation wastewater. Background technique [0002] Ammonia distillation wastewater mainly comes from coking, gas purification and refining of chemical products. It is wastewater containing high concentrations of ammonia nitrogen, phenol, cyanide, oil and toxic and harmful organic substances. The main source is the residual ammonia water with high ammonia nitrogen produced during nitrogen distillation. . In order to reduce the concentration of ammonia nitrogen in ammonia distillation wastewater, an ammonia distillation system is usually set up to pretreat the remaining ammonia water. The high ammonia nitrogen in the ammonia distillation wastewater will increase the load of the ammonia distillation system and increase the amount of alkali, and the correspondingly higher pH value of the ammonia distillation wastewater will affect the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/34C02F101/16
CPCC02F9/00C02F1/281C02F1/283C02F3/00C02F2101/16C02F2103/34C02F2303/16
Inventor 马广伟孙广亿
Owner 湖北申昙环保新材料有限公司
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